/*css3波纹*/
@keyframes move_wave {
    0% {
        transform: translateX(0) translateZ(0) scaleY(1)
    }
    50% {
        transform: translateX(-25%) translateZ(0) scaleY(0.55)
    }
    100% {
        transform: translateX(-50%) translateZ(0) scaleY(1)
    }
}
.waveWrapper {
    overflow: hidden;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    margin: auto;
    z-index: 15;
}
.waveWrapperInner {
    position: absolute;
    min-width: 1200px;
    width: 100%;
    overflow: hidden;
    height: 100%;
    bottom: -1px;
    background-image: linear-gradient(to top, #d6312e 20%, #da1d1d 80%);
}
.bgTop {
    z-index: 15;
    opacity: 0.5;
}
.bgMiddle {
    z-index: 10;
    opacity: 0.75;
}
.bgBottom {
    z-index: 5;
}
.wave {
    position: absolute;
    left: 0;
    width: 200%;
    height: 100%;
    background-repeat: repeat no-repeat;
    background-position: 0 bottom;
    transform-origin: center bottom;
}
.waveTop {
    background-size: 50% 100px;
}
.waveAnimation .waveTop {
  animation: move-wave 3s;
   -webkit-animation: move-wave 3s;
   -webkit-animation-delay: 1s;
   animation-delay: 1s;
}
.waveMiddle {
    background-size: 50% 120px;
}
.waveAnimation .waveMiddle {
    animation: move_wave 10s linear infinite;
}
.waveBottom {
    background-size: 50% 100px;
}
.waveAnimation .waveBottom {
    animation: move_wave 15s linear infinite;
}   


/*svg - buble*/

.btn-wrapper {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.btn {
  display: inline-block;
  background-color: white;
  color: darkslategrey;
  font-size: 14px;
  border-radius: 3px;
  padding: 4px 10px;
  margin-right: 10px;
  text-decoration: none;
}

.wave {
  height: 900px;
  position: absolute;
  left:0;
  right:0;
  top:160px;
  bottom:0;
  z-index: 1;
}

.wave + .wave {
  z-index: 2;
}
